The Polish Police have identified a criminal gang providing illegal Schengen visas to Mongolian citizens. This gang consists of three Polish and three Mongolian citizens. They have been issuing tourist invitations in name of citizens and entities from the Polish town of Olsztyn; these invitations have been sent to Mongolia. The Mongolians, who have received these tourist visas subsequently, have been attempting to immigrate from such Schengen countries as France, Sweden, Spain, and the Czech Republic.